I find most westerners' enthusiasm in this Tibetan independence thing rather disturbing, because most of them have never been to Tibet nor know anything about Tibetan history and culture, or Tibet's current conditions.
The reason they are so upset about the issue is because a book wrote by some ex-SS guy and the anti-communist propaganda during the cold war were the only information people have access to in regards to Tibet for decades. And based on those information, westerners formed a very biased opinion on the issue, and western media tailored to that opinion through very one sided reporting, which strengthens people's opinions on the issue which in turn causing the media to present even more biased reports. And this relationship between public opinion and media went into a vicious cycle, eventually reaching the present state where outright lies can be told by the media and people will swallow them no questions asked.
Now, here is the squillion dollar question: Who is going to un-convinced the Chinese people that westerners are all self righteous, racist, arrogant hypocrites now? And How will he/she do it?